US 12,279,489 B2
Display device and having common electrode with metal nanowires
Masayuki Kanehiro, Sakai (JP); Youhei Nakanishi, Sakai (JP); and Hiroki Imabayashi, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/434,581
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Mar. 6, 2019, PCT No. PCT/JP2019/008959
§ 371(c)(1), (2) Date Aug. 27, 2021,
PCT Pub. No. WO2020/179033, PCT Pub. Date Sep. 10, 2020.
Prior Publication US 2022/0140057 A1, May 5, 2022
Int. Cl. H10K 59/131 (2023.01); H10K 50/84 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/841 (2023.02); H10K 59/122 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display device including a display region and a frame region surrounding the display region, the display device comprising:
a thin film transistor (TFT) layer;
a light-emitting element layer formed with a plurality of light-emitting elements, each of the plurality of light-emitting elements including a first electrode, a light-emitting layer, and a second electrode, and having a luminescent color different from other light-emitting elements of the plurality of light-emitting elements; and
a sealing layer including an organic film and configured to seal the light-emitting element layer,
wherein the second electrode is an electrode common to the plurality of light-emitting elements, and includes metal nanowires which are mesh-shaped,
a flattening film is included in the TFT layer,
a trench is formed in the flattening film in the frame region,
a bank, defining an end portion of the organic film, is provided at an outer side of the trench,
a protruding portion, positioned between the trench and the bank in a plan view, is formed in a frame-like shape surrounding the display region, and
the protruding portion defines an end portion of the second electrode.